| abstract |
The present invention provides a zirconia calcined product that exhibits a suitable color tone after short-time firing. In the present invention, the main crystal system contains monoclinic zirconia and a stabilizer capable of suppressing the zirconia phase transition, and on a straight line extending from one end to the other end of the zirconia calcined body in the first direction. Let (L1, a1, b1) be the first point L * a * b * color system after sintering (L *, a *, b *) in the section from one end to 25% of the total length. The sintered (L *, a *, b *) of the second point in the section from the other end to 25% of the total length is defined as (L2, a2, b2), and L1, a1, b1, L2, a2. , And B2 are within a predetermined range, L1> L2, a1 <a2, b1 <b2, and (L *, a *, b *) after sintering from the first point to the second point. Regarding zirconia calcined body whose increase / decrease tendency does not change. |